中文摘要：

目的建立骨盆、髋臼骨折三维数字化分型系统，评价其对骨科临床及教学的指导意义。方法将一名健康男性志愿者CT扫描所得数据转换成DICOM格式并导入Mimics10．01软件中进行处理，分别重建骨盆、髋臼模型，同时模拟出国际内固定研究学会（A0）分型中各型骨盆、髋臼骨折，对各骨折块予以不同颜色渲染，并将完成制作的骨折三维模型以标准三维图形（STL）文件格式保存。利用视觉化图像工具库（VTK）及跨平台C＋＋图形用户界面应用程序开发框架（Qt）等软件开发工具，完成骨盆、髋臼骨折三维数字化分型软件开发。10名骨科医生及20名医学生分别将三维数字化骨盆、髋臼骨折AO分型图谱和传统的二维分型图谱与患者影像学资料进行对比，并给予初步评价。结果骨盆、髋臼骨折三维数字化分型软件可实现对骨折三维模型的旋转及放缩等操作，从任意角度观察骨折模型。9名骨科医生及18名医学生评价提示，三维数字化骨折分型系统与传统的二维平面分型系统相比，利于对骨盆、髋臼骨折AO分型的理解和判断。结论骨盆、髋臼骨折三维数字化分型系统具有逼真、直观、立体、动态等特点，对于骨科临床及医学教学具有积极意义。

英文摘要：

Objective To establish three-dimensional （3D） digital classification models of pelvic and acetabular fractures and evaluate its significance in orthopaedic clinical and teaching work. Methods Pelvic of a healthy male volunteer was scanned with CT, and the resulting data in DICOM format was imported to Mimics10. 01 software to reconstruct the model of the pelvis and aeetabulum respectively. Based on the standards of AO/ASIF classification of pelvic and acetabular fractures, various types of fractures were simulated. The fracture fragments were displayed with different colors. The completed fracture models were saved in STL format. By use of VTK and Qt softwares, the software of 3D digital models of the pelvic and acetabulum fractures was developed based on the completed 3D models of the pelvis and acetabulum fractures. Ten junior orthopaedic doctors and 20 medical students respectively matched the traditional two-dimensional （2D） atlas and 3D digital models to the imaging data of patients with pelvic and acetabulum fractures, and made a preliminary evaluation. Results In the developed software of 3D digital models of pelvic and acetabulum fractures, the operator could realize the rotation and scaling of 3D models, thus observing the fracture models at any angle. Nine junior orthopaedic doctors and 18 medical students evaluated that the 3D models of the pelvis and acetabulum fractures were more conducive to the comprehension and judgment of AO/ASIF classification of pelvic and acetabular fractures. Conclusions The 3D models of classified fractures of pelvic and acetabular are lifelike, intuitive, three-dimensional and dynamic and are helpful in orthopaedic clinical and teaching work.